Problems in my rear (of the car)

[Andres2882]

Hey all,

Got the new 31-spline axles, posi, UCA, LCA's installed today - which was way more expensive than I anticipated and when I went to drive it home it had a few wierd problems. I left the car there for them to look at but I thought I get a few opinions from you guys too. These are the noises: When I would let off the gas after accelerating, I'd get a decently loud clunk. No real noises at WOT, but when cruising, there was frequently a decently loud whine and sometimes this clunking sound that made me think something was clunking around and around? Any ideas? Anything I should look out for if they say its fine?

 

[RacEoHolic330]

sounds like the gears aren't meshed properly

 

[86bluecobra]

sounds like the gears aren't meshed properly

i argee you probably have to shim this 31 spline posi differently then the previous 28 spline posi. takes a bit of time but you can do it by yourself. i don't have a good link for you on how to do it but im sure someone will post one for you.

 

[BERT306]

Here's a good write up on how to set up gears in a 8.8 rear, and rebuild the whole thing:
http://www.angelfire.com/theforce/5ohcpa/cpa5ohtech001.htm

 

[86bluecobra]

i knew someone would come through with a link.

 

[Andres2882]

Hopefully it won't come to that. I'm not going to drive the car off the lot till the noises go away. I just wanted some ideas of what it could be and now I have those. Thanks!

 

[04sleeper]

Did they use Friction Modifier when they refilled the diff?

Sometimes it will cause noises if it is not put back in.

 

[Andres2882]

Yes they did. At least I paid for it so I hope they did